99 results about "Inorganic lead compound" patented technology

The invention discloses methods and equipment for recovering waste diachylon by a wet method and manufacturing an electrode active substance material of a high performance lead acid battery by the wet method. The equipment comprises device required for a technology process by a chemical method, a chemical machinery method or an electrochemical machinery method. The active substance material provided by the invention can substantially raises an utilization rate of the active substance of the lead acid battery, specific energy of the battery and charging capability of the battery, simultaneously avoids generation and discharge of harmful substances such as lead gas, lead smoke, lead dust and SO2, raises a lead utilization rate in a production process, is beneficial for treating and recycling lead compounds and lead-containing liquid generated in a lead gas recovering process in a plate casting or welding technology, and reduces cost.

The invention relates to a method of using high mass matrix assisted laser desorption-ionization (MALDI) mass spectrometry for the qualitative and quantitative analysis of the effect of drug candidates on protein complexes such as protein-protein interactions in purified samples or complex biological matrices, as well as to the use of this method for lead compound optimization, drug characterization, drug manufacturing processes, and drug quality control processes, including automated high throughput applications.

An outstandingly low environmental impact wet process recovers the lead content of an electrode slime and / or of lead minerals in the valuable form of high purity lead oxide or compound convertible to highly pure lead oxide by heat treatment in oven at relatively low temperature, perfectly suited for making active electrode pastes of new batteries or other uses. The process basically comprises the following treatments:a) suspending the impure lead containing material in an aqueous bath containing at least a lead oxide dissolving acid;b) reducing any insoluble lead dioxide to lead oxide by introducing in the suspension either hydrogen peroxide, a sulphite or sulphurous anhydride;c) converting all dissolved lead oxide to lead sulphate in the aqueous bath;d) obtaining a solution of lead sulphate obtained in an aqueous solution containing an acetate salt;e) precipitating and separating a purified lead compound in the form of either carbonate / oxycarbonate or of oxide / or hydroxide by adding to said acetate salt solution a carbonate salt or a hydroxide of the same cation of said acetate salt, respectively.Exemplary flow sheets according to several alternative embodiments and related processing plant diagrams are disclosed.

This invention relates to cationic electro-coating composition which comprises blending which an aqueous dispersion or an aqueous dispersion paste which contains an organic acid-modified bismuth compound in a non-water-soluble state, and which is obtained by mixing and grinding a bismuth compound and an organic acid in an aqueous medium. Said cationic electro-coating composition, although containing no lead compounds, is capable of forming an electrocoated film which is excellent in corrosion resistance, appearance, etc.

The invention discloses silver paste for a disk capacitor electrode. The silver paste comprises the following components by weight percent: 50-80% of ultrafine silver powder with the particle size of less than 2mu m, 2-15% of lead-free glass powder, 0.1-10% of inorganic additive, 5-25% of polymer resin, 10-40% of solvent and 0-10% of organic additive, wherein the sum of the weight percentages of the components is 100%. The silver paste has good dispersivity, narrow particle size distribution, low sintering shrinkage rate and good conductivity, the screen printing patterns are smooth and flat,the silver surface is continuous and bright, the silver paste has high adhesive force and good electrical performance; and the glass powder does not contain lead, cadmium and the compounds of lead and cadmium, thus the environmental requirements of the European Union RoHS can be met.

The invention discloses a method for recovering a lead-containing raw material by using a wet process. The method comprises the steps: (1) leaching the lead-containing raw material by using a solution, adding a reducing agent to reduce lead dioxide or lead orthoplumbate in the lead-containing raw material into a soluble lead salt, after a lead compound is completely dissolved, filtering the solution, and separating to obtain a filtrate A and an insoluble substance, wherein the solution contains sulfate, a complexing agent and a catalyst; (2) adjusting the pH value of the filtrate A, separating to obtain lead sulfate and a filtrate B, and returning the filtrate B to the step (1) after sulfate radicals are replenished and the pH value is adjusted; (3) directly using lead sulfate as battery materials or commodities, subjecting a sulfate-containing alkaline solution and lead sulfate to reaction, and separating to obtain basic lead sulfates and a filtrate C, wherein the basic lead sulfates include tribasic lead sulfate and tetrabasic lead sulfate. The method can be used for purifying the lead-containing raw material to form lead sulfate and basic lead sulfates directly used for producing lead-acid batteries, thereby being an environment-friendly wet-process recovery method.

The invention relates to a novel low-smoke zero-halogen flame-retardant cable sheath material, which comprises the following components in percentage by weight: 15-35 percent of low-density polyethylene, 15-35 percent of ethylene-vinylacetate copolymer, 8-30 percent of modified nano magnesium hydroxide, 2-6 percent of microencapsulated red phosphorus, 8-19 percent of thermoplastic phenolic resin, 1.8-3 percent of dicumyl peroxide as a crosslinking agent, 0.1-0.25 percent of antioxidant 1010, 1-3.5 percent of lead sulfate tribasic as a lead compound and 0.1-1 percent of N-salicyl aminophthalimide as a copper inhibitor. According to the novel low-smoke zero-halogen flame-retardant cable sheath material, the consumption of the modified nano magnesium hydroxide is reduced by adding the thermoplastic phenolic resin and the microencapsulated red phosphorus on the basis of ensuring the performance of mechanical energy, and the purpose of synergically retarding flame is achieved. When the cable sheath material burns, the microencapsulated red phosphorus absorbs a great deal of water decomposed and released when the modified nano magnesium hydroxide burns, to generate phosphoric acid, metaphosphoric acid, polymetaphosphoric acid and the like which cover the surface of the thermoplastic phenolic resin with higher carbon content, so that the surface of the thermoplastic phenolic resin can be dehydrated and carbonized in an accelerating way to form a thick liquid film layer for isolating oxygen and heat from the inside sheath material, and thus burning can be weakened or interrupted, and the flame-retardant effect of the cable sheath material is enhanced; meanwhile, the novel low-smoke zero-halogen flame-retardant cable sheath material disclosed by the invention has the advantages of zero halogen, low smoke formation amount during burning and little pollution to environment.

The invention discloses a preparing method for nano micron lead sulfate with electrochemical activity and a method adopting the lead sulfate to prepare a lead-acid cell. The preparing method for nano micron lead sulfate includes the following steps: using a morphological control agent for controlling the crystal growth of lead sulfate; enabling a water solution of soluble lead salt to react with a water solution of soluble sulfate / sulfuric acid, or enabling an aqueous dispersion of lead elementary substance / insoluble lead compound to react with a water solution of sulfuric acid in a clash flow reactor; finally obtaining the nano micron lead sulfate. The preparing method for the lead-acid cell includes the following steps: adopting the lead sulfate as active substances for an anode and a cathode; preparing a positive plate and a negative plate through adding fibers, a conductive agent, an expanding agent and the like; adding membranes between the two poles; then placing the two plates in a cell box for battery charging and formation. The invention has the advantages that the nano micron lead sulfate is high in electrochemical activity; the performance of the lead-acid cell is high and the service life of the lead-acid cell is long after the nano micron lead sulfate is adopted as the active substances of the lead-acid cell; besides, the preparing methods for the lead sulfate and the lead-acid cell are simple and feasible and have the characteristics of energy conservation and environmental protection.

The invention discloses a lead compound nano-powder preparation method for recovery and manufacture of lead-acid battery. The lead compound nano-powder preparation method comprises the following steps that 1, lead, a lead salt or waste lead-acid battery lead paste reacts with one or more organic or inorganic compounds to produce a soluble lead salt solution or a lead hydroxide solution; 2, one or more alkalis or caustic alkalis are added into the soluble lead salt solution, or a part or excess amount of H2CO3 or CO2, sulfuric acid, one or more organic acids or their salts are added into the lead hydroxide solution, and 3, lead oxide or lead hydroxide precipitates obtained by the step 2 are filtered and are subjected to drying and pyrolysis to form the lead compound nano-powder. The lead compound nano-powder preparation method realizes environmentally friendly recovery and production, has low energy consumption, greatly reduces a production cost, and shortens a production period. The lead compound nano-powder obtained by the lead compound nano-powder preparation method is conducive to improvement of technical product performances.

The invention discloses an in-situ preparation method of a perovskite solar battery photo-anode. The method comprises the steps that lead-contained compounds are evenly dispersed in titanium dioxide slurry, a film is formed on a conductive base material by the adoption of a knife coating method or a spin-coating method, and a composite film formed by titanium dioxide and lead oxide is obtained through high-temperature sintering; through processing of a haloid acid solution, a composite film formed by the titanium dioxide and lead halide is obtained in an in-situ mode; a layer of lead halide is formed on the surface of the composite film in a spin-coating mode; through processing of an organic amine halide solution, the composite photo-anode is obtained in an in-situ mode, wherein a halogenated organic lead perovskite light absorbing material of the composite photo-anode makes good contact with the titanium dioxide and filling and covering of the composite photo-anode are even. The photo-anode prepared through the method can meet the application requirements of efficient and low-cost perovskite solar batteries, and has the advantages of being mild and controllable in preparation condition, simple and effective in preparation method, low in cost and capable of being produced on a large scale easily.

An electrode and a DEL capacitor formed therewith. The electrode will typically be a polarizable electrode, and may be formed of an activated carbon material having a substantially zero ash percentage and a low percentage of transition metals. In constructing a DEL capacitor employing such an electrode, a non-polarizable electrode formed from a lead dioxide / lead sulfate compound is preferably also used. The DEL capacitor may utilize an acid-based electrolyte, such as an aqueous sulfuric acid electrolyte. Consequently, the present invention also includes a current collector that preferably comprises a base material formed from a lead or a lead compound and a protective coating material that is resistant to an acid-based electrolyte. Preferably, the protective coating material is formed from a polymer base and a conductive dope that may thereafter be applied to the current collector base material by a variety of methods.

An electrode and a DEL capacitor formed therewith. The electrode will typically be a polarizable electrode comprised of an activated carbon material having a substantially zero ash percentage and a low percentage of transition metals. In constructing a DEL capacitor employing the electrode of the present invention, a non-polarizable electrode consisting of a lead dioxide / lead sulfate compound is preferably also used. The DEL capacitor may utilize an acid-based electrolyte, such as an aqueous sulfuric acid electrolyte. Consequently, the present invention also includes a current collector that preferably comprises a base material consisting of lead or a lead compound and a protective coating material that is resistant to an acid-based electrolyte. Preferably, the protective coating material is formed from a polymer base and a conductive dope that may thereafter be applied to the current collector base material by a variety of methods.

An igniting agent composition substantially free of a lead compound, characterized in that it comprises a metal power and one or more selected from the group consisting of nitrate salt, basic nitrate salt, a metal oxide and a basic carbonate salt; and an igniter using the igniting agent composition. The igniting agent composition shows no delay in ignition time and no reduction in igniting capability, as compared to conventional lead-containing composition.

An all-wet process for reclaiming the lead content of impure electrode paste or slime from discarded lead batteries and / or lead minerals, in form of high purity lead compound, comprises a) suspending the impure lead containing material in a lead sulphate dissolving aqueous solution of a salt belonging to the group composed of the acetates of sodium, potassium and ammonium; b) adding to the suspension sulphuric acid in an amount sufficient to convert all lead oxides to lead sulphate soluble in the acetate salt solution and slowly adding to the suspension either hydrogen peroxide or a sulphite or bubbling sulphurous anhydride through it, in a measure adapted to reduce any lead dioxide to lead oxide converted eventually to soluble lead sulphate by the sulphuric acid; c) separating a limpid acetate salt solution containing dissolved lead sulphate from a solid phase residue including all undissolved compounds and impurities; d) adding to the separated solution of lead sulphate either carbonate or hydroxide of the same cation of the acetate salt of the lead sulphate dissolving solution for precipitating highly pure lead carbonate / oxycarbonate or lead oxide or hydroxide, respectively, while forming sulphate of the cation, soluble in the acetate salt solution; and e) separating the precipitated high purity lead compound from the acetate salt solution now containing also sulphate of the same cation of the acetate salt. The acetate salt solution containing also sulphate of the same cation of the acetate salt separated from the precipitated compound of lead is re-cycled to step a) and the content of sulphate of the same cation in the solution is maintained below saturation limit by continuously or periodically cooling at least a portion of the solution separated from the precipitated lead compound to cause selective crystallization of sulphate salt of the same cation of the acetate salt and removing it as a by-product. Optionally, the separated solid phase comprising insoluble compounds of lead and / or undissolved concretions of lead compounds is treated in hot concentrated hydroxide of the same cation of the selected acetate salt and converting these compounds of lead and / or undissolved concretions of lead compounds to soluble plumbites, and the separated lead containing alkaline liquor may be added to the limpid acetate solution for precipitating all reclaimable lead in form of high purity lead oxide or hydroxide.

The disclosed Ga-Ge-Bi-Pb fluorescent glass material doped with rare earth is prepared by: mixing and fusing the Ga2O3, Bi2O3, GeO2, lead-contained compound and rare earth compound to obtain the fused glass liquor; clearing and pouring the liquor into the mold to obtain the glass; putting the glass rapidly into a muffle furnace with temperature as the glass transformation temperature for heat preservation; finally, cooling to room temperature. This product can be manufactured into different shape, and has wide application as the gain medium.

Rupestonic acid derivatives are rupestonic acid derivative A- or B-type compounds, prepared through a condensation reaction from starting materials, i.e., a monomer compound of rupestonic acid and an aromatic amine or fatty amine or an organic alcohol, i.e., a fatty alcohol or an aromatic alcohol. Rupestonic acid, which is the monomer compound of sesquiterpene isolated from the plant Xinjiang Artemisia rupestric L., is used as a mother compound. Natural anti-virus lead compound with high activity are discovered by modifying the structure of the monomer compound of rupestonic acid. Activity results of the lead compound showed pharmaceutical application of anti-I, II flu virus and anti-I, II herpes simplex virus infection. These compounds can be used alone or in combination with one or more pharmaceutical acceptable, inert and nontoxic excipients or carries in a pharmaceutical composition.

The invention discloses a method for preparing a high-purity lead compound through wet recovery and impurity removal of waste lead plaster. The method comprises the following steps that 1, strong basecontaining Na and K elements is used as a basic desulfurizer for carrying out normal-temperature desulfuration on waste lead paster, the obtained desulfurated lead paster reacts with an acid leachingagent mixed with a hydrogen peroxide reducing agent, after reaction is finished, a lead salt solution is obtained by adjusting the pH value and carrying out filtration according to the variety of theacid leaching agent, or the lead salt solution is obtained through direct filtration; 2, the lead salt solution is subjected to liquid phase reaction conversion to prepare a solid phase lead compound, and lead oxide and other products can also be produced through follow-up roasting. By means of the whole process technological set of wet recovery and parameter conditions adopted by key technologysteps are improved and optimized, the high-purity lead compound (and high-purity lead oxide) can be prepared from waste lead paster through an acid leaching wet recovery method, and the problems thattwo impurity elements Ba and Fe are high in content and not likely to be removed are solved.

The invention provides for the use of antimicrobial chemical entities based on a nitrothiazolide backbone that exhibit anti-mycobacteria activity, including the mycobacterium causing tuberculosis. Multiple compounds were synthesized and screened for anti-tuberculosis activity. Disclosed herein are a series of compounds with anti-tuberculosis activity, including six leads that completely inhibited bacterial growth at 5 micrograms per ml or less. Three of these compounds were tested to determine MIC and these ranged between 1 and 4 micrograms per ml against both drug susceptible Mycobacterium tuberculosis strains and strains that are multi-drug resistant (MDR) including XDR strains. The compounds developed are derived from parent compound nitazoxanide, which had no inhibitory activity in the stringent testing format used herein. The derivatives were synthesized using a di-nitro-thiophene or 4-Chloro-5-Nitro-thiazole scaffold and R groups connected via a peptide bond (NHCO) to cyclic compounds such as benzene, thiophene or furans. Many of these compounds have broad spectrum activity against Gram positive bacteria including Staphylococcus aureus (MRSA) and Staphylococcus epidermidis. Several of these lead compounds were not toxic for mice at 200 mg / Kg doses administered over a period of three days.

The invention relates to a method for preparing water glass by utilizing waste lead-containing glass and separating a lead-containing compound. The method comprises the following steps of: firstly, making the lead-containing glass of an abandoned cathode-ray tube (CRT) into water glass fusion cake, hydrolyzing the fusion cake, and separating hydrolysate to obtain a water glass solution; then adding an additive to convert lead dissolved in the water glass into lead sulphide, separating and collecting lead sulphide sediment to obtain a lead-free potassium or sodium water glass solution, further treating dissolved residue to convert the lead-containing compound in the residue into lead sulphide, and recycling lead sulphide in the hydrolysis residue by adopting a floatation method. The method disclosed by the invention has the advantages that silicon, potassium and sodium ingredients in the lead-containing glass of the abandoned CRT can be converted into the water glass, recycling of the lead-containing compound is solved; the water glass is a basic inorganic chemical industry product with wide application range; and recycling of the lead-containing compound is solved, the recycled lead-containing compound can be taken as a raw material for lead smelting, and recycling of lead resource is realized.

The invention relates to a mirror back protective coating for a copper-free silver mirror. The protective coating comprises base coat and finishing coat, wherein both the base coat and the finishing coat comprise modified alkyd, acrylate resin, novolac epoxy resin and crosslinked resin. The novolac epoxy resin and the crosslinked resin can form a rigid netted dense structure after undergoing a high-temperature curing reaction, so that the corrosion resistance of the coat is greatly improved, long-term effective protection of a silver layer is realized, and the coat is endowed with appropriate rigidity and scratch resistance. The coating of the invention contains a great amount of radicals such as epoxy groups, ether bonds, hydroxide radicals and the like, thereby greatly increasing the adhesive force of the coat. The coating of the invention does not adopt anti-corrosion lead-containing compounds, thereby avoiding environment pollution. The coating of the invention can adopt a large-scale curtain-coating molding process, can realize quick drying, can be completely solidified after being roasted at the temperature of between 120 and 150 DEG C for 5 to 8 minutes, has excellent physical and chemical properties and contributes to large-scale industrial production.

The invention discloses a flotation activating agent for fine-grain cassiterite and a preparing method of the flotation activating agent. The flotation activating agent is a coordination compound of lead and ammonia, and the molecular formula of the coordination compound is [Pb(NH3)x]2+, wherein X in the molecular formula ranges from one to eight. The preparing method of the flotation activating agent mainly comprises the steps that, lead nitrate, lead acetate hydrate and lead acetate are dissolved in ethyl alcohol or methyl alcohol or water through ammonium hydroxide dissolving, then, sodium hydroxide and sodium carbonate are added, mixing is conducted for the reaction, and the flotation activating agent is obtained through drying. The flotation activating agent is used for activating the fine-grain cassiterite in ore, the surface hydrophobicity of the fine-grain cassiterite is improved, the proportion of lead and ammonia in the flotation coordination compound of the cassiterite is increased, adjustment can be conducted according to the specific beneficiation raw material condition, flexibility and changeability are achieved, adaptability is high, and the application range is wide. The flotation tin concentrate grade and recycling rate of the fine-grain cassiterite are increased, economic benefits are increased, raw materials are cheap and easy to obtain, and the production cost is low.

The invention provides a lead-acid battery composite negative plate, which belongs to the field of electrochemical power sources. The active carbon used in the composite negative plate has been pretreated by depositing lead compounds on the surface, and the present invention deposits lead compounds such as lead oxide on the surface of the active carbon by applying the method of evaporation concentration and pyrolysis. The composite polar plate of activated carbon prepared by this pretreatment method has greatly improved its hydrogen evolution overpotential and the specific capacitance value of the activated carbon contained in it, and also improved the high rate part of the battery assembled with this composite polar plate. Cycle life under state of charge.

The invention discloses a method for improving the quality of low-grade zinc oxide and removing fluorine, chlorine and arsenic in low-grade zinc oxide by reducing and roasting in a rotary kiln. The method comprises the steps of adding the low-grade zinc oxide into the rotary kiln, roasting the low-grade zinc oxide under high temperature and micro negative pressure condition in the kiln with 900-950 DEG C of kiln temperature and 550-650 DEG C of kiln tail temperature, controlling the rotation speed of the rotary kiln to be 1.5turns / min and controlling the roasting time to be 1-1.5h, enabling a fluorine compound and a chlorine compound to be in physical and chemical changes so as to promote the fluorine compound and the chlorine compound of lead and zinc to be decomposed into gas state, volatilizing low-boiling-point fluorine compound and chlorine compound, enabling the low-boiling-point fluorine compound and chlorine compound to enter a multi-tube zinc removing system, a cloth bag dust collecting system and a desulfurizing tower tail gas processing system so as to remove the low-boiling-point fluorine compound and chlorine compound, cooling the roasted low-grade zinc oxide in the rotary kiln to obtain a finished product. According to the method, the superiorities on the chlorine removing rate, the Zn melting rate and the coal consumption are obvious, nearly one-third coal consumption is reduced; and the elements such as the influence of sulfur-containing elements entrained in coal to the environment and the like can be reduced, and the environment pollution can be lowered greatly.

Positive active material pastes for flooded deep discharge lead-acid batteries, methods of making the same, and lead-acid batteries including the same are provided. The positive active material paste includes a lead compound, a carbon additive, and a silicon additive. The positive active material paste contains carbon additive at a lead to carbon additive weight ratio of 90 to 1900 and a silicon additive at a lead to silicon additive weight ratio of 200 to 4100.

The present invention provides a cationic electrophoretic paint composition which does not contain heavy metal rust inhibitors such as lead compounds from the viewpoint of environmental protection, and at the same time provides a paint film with excellent corrosion resistance. The cationic electrophoretic coating composition comprises a water-soluble or water-dispersible compound containing a phosphonium group, and the compound has a group represented by the above general formula (1), in which the R groups can be the same or Differently, each represents an alkyl group or a hydroxyalkyl group, and at least one R group is a hydroxyalkyl group.

The invention provides a flat panel detector structure and a preparing method thereof. The preparing method comprises the steps of providing a substrate and preparing a lower electrode layer on the substrate; providing a radiation absorbing material liquid, wherein the radiation absorbing material liquid comprises a lead-containing compound liquid; and coating the radiation absorbing material liquid on a lower electrode layer to prepare a light-converting layer on the lower electrode layer based on the coated radiation absorbing material liquid; and preparing an upper electrode layer on the light-converting layer. The structure and method of the invention improve the materials of the existing light-converting layer, improve the radiation absorption capability of the light-converting layer,reduce the thickness of the light-converting layer, design the forming method of the light-converting layer and solve the problem in forming a polycrystalline structure. Furthermore, the chemical composition and phase uniformity of the device are improved; the uniformity of the image is raised; the effective utilization of raw materials is raised; the process equipment is simplified; the structure of the detector is designed; the problem of leakage current is mitigated; the noise of detector is reduced; the sensitivity and the contrast ratio are raised; the electrode materials of the detectorare improved; and the cost is reduced.

The invention discloses a method for preparing a graphene / lead compound composite material for producing batteries. The method comprises the following steps: firstly, performing hydrothermal reaction on a lead compound and graphene oxide, and mixing or performing ball-milling mixing, thereby obtaining a graphene oxide / lead compound composite material; and secondly, reducing the prepared graphene oxide / lead compound composite material, thereby preparing the graphene / lead compound composite material. When the graphene / lead compound composite material prepared by using the method is used, not only is agglomeration of graphene avoided, but also uniform dispersion of graphene and the lead compound is achieved, and the graphene and the lead compound can be uniformly mixed; when the graphene / lead compound composite material is used as a high-efficiency additive of a lead-acid cell, the charge accepting capability of the battery can be remarkably improved, and the HRPSoC cycle life of the battery can be prolonged.

The invention discloses a wash-free production process for jeans. The wash-free production process for the jeans comprises the following steps: (1) sizing; (2) printing; (3) steaming; (4) tailoring; (5) sewing; and (6) performing afterfinish. The wash-free production process for the jeans disclosed by the invention combines the modern computer technology, the chemical technology, the mechanical automation technology, the printing technology and the like perfectly, and has the following three advantages that the cost is low, and the produced jeans are 5 to 20 yuan unequally cheaper than those produced by the conventional method; the quality is high, the used dye is activated dye, the color fastness reaches level 4 and higher than that of the indigo and sulfur dye, and the jeans are water washing resistant and colorfast and look new for a long time; and the pollution is low, the water consumption is low, and particularly the jeans are not required to be subjected to color stripping treatment by using a large amount of heavy metal compounds of lead, cadmium and the like and nonyl phenol, octyl phenol, perfluorooctane sulphonate, benzidine, formaldehyde and the like in the prior art.

The invention discloses a glass powder for a solar cell right side silver paste. The glass powder is characterized by mainly comprising the following components by weight: 21-5% of SiO, 30.2-4% of Al2O, 1-5% of B2O3, 5-10% of ZnO or Zn3(PO4)2, 0.1-1.5% of BaCO3, 0.1-1.0% of MgO, 15-25% of TeO2, 0.1-1.0% of P2O5, and 60-70% of a lead compound and a bismuth compound. The glass powder provided by the invention can promote the sintering of a conductive silver powder, realize more compact electrode sintering, is conducive to the formation of a good ohmic contact, and has the advantages of reducing the solar cell series resistance and increasing electrode adhesion.

The invention provides a preparation method for a graphene / lead compound composite material. A production method for a lead-acid battery comprises: firstly, performing hydrothermal reaction mixing or ball-milling mixing on a lead compound and graphene oxide to obtain a graphene oxide / lead compound composite material; secondly, assembling the lead-acid battery by taking the graphene oxide / lead compound composite material as an electrode material additive; and thirdly, performing electrochemical reduction on the lead-acid battery to obtain the lead-acid battery containing the graphene / lead compound composite material. The lead-acid battery produced with the method contains the graphene / lead compound composite material, so that the agglomeration of the graphene is avoided, uniform dispersion of the graphene and the lead compound is realized, and the graphene and the lead compound can be uniformly mixed; and moreover, a graphene / lead compound superbattery is easily obtained through the electrochemical reduction, so that the charge acceptance capability of the battery is remarkably improved and the cyclic life of the battery is remarkably prolonged.